how to generate auto increment number in php

This article briefly introduces how to use MySQLrownumberSQL to generate auto-increment sequence numbers. This article briefly introduces how to test the auto-increment sequence number generated by MySQL rownumber SQL. MySQL almost simulates most

I am a newbie. I have been confused for a long time. Today I decided to ask you the correct or common practices. Here is a simple example: id, title, content ,...... Label table: id. The two tables above the title obviously require auto-incrementing

Do you need to use rand to generate a random number and then go to the database to query whether there is such a number? It seems a little time-consuming. Is there any other way? Do you need to use rand to generate a random number and then go to the

A fixed number (such as 8 digits) is randomly generated and saved to the database as the uid registered by the user. Each uid is unique but can be 12345678,12345677. One way is to randomly generate eight digits and then query the database for this

Description of the ADODB class in PHP. Although PHP is a powerful tool for building a Web system, the function of accessing the database by PHP has never been standardized, although PHP is a powerful tool for building a Web system, the function of

Many of the former web site's news release system has adopted dynamic server technology to generate static HTML practices, the benefits are: one can reduce the burden on its servers, the second is because of the generation of HTML static pages, so

MySQL table sharding auto-incremental ID Solution After we perform the table sharding operation on MySQL, we cannot rely on the automatic increment of MySQL to generate a unique ID, because the data has been distributed to multiple tables. Avoid

1. preface ADODB is short for ActiveDataObjectsDataBase. it is a function component for accessing the database in PHP. Chen Yingguang, the host of the SFS3 system (Campus Free Software Exchange Network student affairs system) plan, decided to use

Although PHP is a powerful tool for building a Web system, the function of accessing the database by PHP has never been standardized, use a different and incompatible application interface (API ). In order to fill this gap, ADODB emerged. Once the

How does php generate a machine code, which has a unique value on a client and does not repeat similar mac addresses? in this way, each machine can only be registered with a single one, preventing php from generating a machine code, the unique value